Question

A through E please

5. Last week, a quality control technician for Global Hydrogen Peroxide determined the concentration of a batch of household hydrogen peroxide. She followed the instructions in the Laboratory Investigations section of this experiment and obtained this data: volume of hydrogen peroxide, mL barometric pressure, in. Hg temperature of water, °C volume of oxygen gas collected, mL 8.72 30.09 21.4 99.4 (a) What is the pressure, in atmospheres, of oxygen gas collected?

Answer 1

· Op. (@) Pressure of orygon = 30.09 mm Hg to. We know 760 mm Hg = laton 1-30.09 mm Hg = 3007 am TO 760 = 0.0391592105 alin 0.04 atm (6) we know for ideal gon PV = nRTIPO in = pv 01 W = 0.04 abr 99.48 1032 0.082 Xammotif (273+21.4 is ~ 1.65810-4 mos i to wo 0 JOP

(9 V V m = - RT ooyaan 872x10 3 0.882 utapon mot '44 1.44x10-5 mol (273 +21.4 x . 1.448105 moles of 402 reacted. (d) volume of 40 = 8.72 m2. 8.72 ml ho contain 1.44610-5 moles of 1402. 1000 ml hill contan 1-44X100 x 1000 miles of the 8:42 ~ 1.65*10-3 mole . conc. of H2O = 1.65818-3 moles/1000 m2 = 1.65X103 mole' = 1.65X10°3 m (C) Molies of Helly = 1*5x70 1:44x10 -5 miles. Molor mm of thez = 34.0147 g molt 1.44x105 mol of H202 = 144x10-5 splex 34.0147 grill ~ 4.8988104 g of the of the 8.72 ml 12% contum 6.8988184 g of the 100 ml Chile contam 4.898810-4X100 8-72 g of the = 5.62x103 g. 7. (w/v) = 5.62x103 g. And I (Wt/wt) - man of Hall molarman of this - xlor 4.898810-4 340147 aluz x100 %. = 1.44X103